<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>vue</title>
</head>
<body>
	<div id="app">
		<p v-if="seen">现在你看到我了</p>
		<templa v-if="ok">
			<p>第一行</p>
			<p>第三行</p>
		</templa>	
	</div>
<script src="vue.js"></script>
<script>
	new Vue({
		el: '#app',
		data: {
			seen: false,
			ok: true
		}
	})
</script>
</html>